Adult word recognition and visual sequential memory

Two experiments were conducted investigating the role of visual sequential memory skill in the word recognition efficiency of undergraduate university students. Word recognition was assessed in a lexical decision task using regularly and strangely spelt words, and nonwords that were either standard orthographically legal strings or items made from words with internal transposed letters. Symbol memory was evaluated in a recognition procedure in which sequences of three to five unfamiliar complex symbols were presented, each followed by a subsequent array containing the symbols either in the same order or with an order transposition. In Experiment 1, there was no independent contribution of symbol memory to either word or nonword processing independently of the ability to discriminate the symbols from one another. In Experiment 2, although symbol memory made a significant contribution to word recognition independently of symbol discrimination and letter identification for two conditions??long strangely spelt words and short transposed-letter items, the effects were extremely small. It was concluded that non-verbal visual sequential memory skill does not play a central role in underpinning efficiency of word recognition in experienced adult readers.     

从两个视角分析信息技术与课程整合

本文从中文用语的语素构成出发,对信息技术与课程整合从两个视角,即课程与教学论视角：“信息技术”与“课程整合”;教育技术视角：“‘信息技术与课程’整合”进行了分析与研究,最后提出两个视角的研究应该进行沟通与共融,达到最终的共同目标。     

The role of segmental and tonal information in visual word recognition with learners of Chinese

The present study investigated the representation and processing of segmental and tonal information in visual Chinese word recognition in native and non‐native Chinese readers. Two experiments using homophone judgement paradigm were conducted. When judging two Chinese characters (Experiment 1), both groups showed difficulties when the segmental but not tonal information was shared (i.e., S+T? condition), with stronger interference for non‐native readers. When judging a Pinyin and a Chinese character (Experiment 2), non‐native readers' S+T? disadvantage was significantly reduced. Finally, when their L1s share the Latin alphabets with Pinyin, the participants showed stronger segmental reliance compared with the native readers. These findings suggest that while both native and non‐native readers rely more on segmental information in Chinese visual word recognition, this reliance is stronger among non‐native readers. Furthermore, the alphabetic nature of the Pinyin orthography may help non‐native readers' phonological representation and processing in a nonalphabetic writing system.     

Ontology在异构信息集成中的应用

在信息集成过程中,本体解决了异构信息的语义异构问题,实现了信息语义上的互操作。在分析定制转换、集中复制、中间件等信息集成方法的基础上,介绍了一种基于Ontology的信息集成模型,通过实例介绍,向用户提供获取数据的统一接口。     

Morphological structures in visual word recognition: the case of Arabic

This research examined the function within lexical access of the main morphemic units from which most Arabic words are assembled, namely roots and word patterns. The present study focused on the derivation of nouns, in particular, whether the lexical representation of Arabic words reflects their morphological structure and whether recognition of a word involves recognition of its morphological constituents. The morphology of Arabic language constitutes two main systems: inflectional morphology and derivational morphology. Inflectional morphology is used to express grammatical relations and derivational morphology deals with the formation of new words in language; it contains two types of word patterns: verbal and nominal. In this study, it was assumed that roots are lexical entities that can facilitate lexical access to a large cluster of words that derive from them, whereas word patterns are not lexical entities and have no role in access to words assembled by them. The lexical representations of the main morphemic units were examined in four experiments using skilled readers applying masked priming technique tasks: lexical decision and naming. The results indicated that previous exposure to a word sharing the same word pattern had no marked facilitating effect on lexical decision or on naming. The main conclusion of this study on the morphology of Arabic is that roots and word patterns have no essential role in word organisation in the mental lexicon. In addition, words in nominal pattern in derivational morphology are represented in their whole shape in the mental lexicon and each word has an independent representation.     

Physiological self-regulation and information processing in infancy: cardiac vagal tone and habituation

This study investigates the role of physiological self-regulation (cardiac vagal tone) in information processing (habituation) in 81 infants. Nucleus ambiguus vagal tone (Vna, a measure of respiratory sinus arrhythmia) was used to index cardiac vagal tone. Physiological self-regulation was operationalized as the change in Vna from a baseline period of measurement to habituation. Decreases in Vna consistently related to habituation efficiency, operationalized as accumulated looking time (ALT), in all infants twice at 2 months and twice at 5 months; however, this relation was accounted for by infants who met an habituation criterion on each task. Among habituators, shorter lookers also had greater Vna suppression during habituation. Within-age and between-age suppression of vagal tone predicted ALT, but ALT did not predict suppression of vagal tone. Physiological self-regulation provided by the vagal system appears to play a role in information processing in infancy as indexed by habituation.     

句子理解中语言信息的整合加工机制

句子理解过程是对语音、词汇、句法、语义层面语言信息的整合加工过程。分段式、并行式和一体式模型争论的核心在于语言信息加工的时间进程和交互作用。根据已有实验推测：1)语言信息在句子加工中起作用的方向很　可能由其本身层次属性决定：句法信息作用方向可能向后,语义信息作用方向可能向前;2)语言信息在句子加工中起作用的强度也很有可能由其本身层次属性决定,但都还需进一步实验验证。语用层面信息加工过程的研究需要加强,实验材料为汉语的相关研究有待单独梳理。     

Orthographic processing and visual sequential memory in unexpectedly poor spellers

Does unexpectedly poor spelling in adults result from inferior visual sequential memory? In one experiment, unexpectedly poor spellers performed significantly worse than better spellers in the immediate reproduction of sequences of visual symbols, but in a second experiment, the effect was not replicated. Poor spellers were also no worse at the immediate recognition of symbol sequences. Overall, the results indicate that inferior visual memory is not characteristic of unexpectedly poor spellers. However, they do have less efficient orthographic processing skill: they were significantly slower and more error prone than better spellers at classifying both regularly and strangely spelt words, as well as at detecting letter transpositions in long words. They can thus be considered as subtly worse word readers than better spellers. While the findings question the notion of unexpectedly poor spelling in relation to normal adults, they provide confirmation of the intimate relationship between reading and spelling processes.     

Face processing in infancy: developmental changes in the use of different kinds of relational information

Adults use both first-order, or categorical, relations among features (e.g., the nose is above the mouth), and second-order, or fine spatial relations (e.g., the space between eyes), to process faces. Adults' expertise in face processing is thought to be based on the use of second-order relations. In the current study, 5-month-olds detected second-order changes, but 3-month-olds failed to detect second-order changes induced by 2 different manipulations. Three-month-olds did detect first-order changes, however. Also, inversion affected 5-month-olds' processing of second-order but not first-order information. These results suggest that, although sensitivity to first-order relations is available by 3 months or earlier, sensitivity to second-order information may not develop until sometime between 3 and 5 months of age.     

Studies of visual information processing in schizophrenic children

11 children meeting DSM III criteria for schizophrenia (mean age approximately 12 years), a group of normal children matched in mean mental age to the schizophrenic children, and a group of younger normal children (mean age 6.6 years) were administered a series of visual information-processing tasks in order to isolate core information-processing impairments in childhood onset schizophrenia. In Experiment 1, the schizophrenic children showed impairment relative to the MA-matched normals and performed at the level of the younger normal children on a forced-choice partial-report version of the span-of-apprehension task. Previous research has shown that this task is sensitive to dysfunction in both actively and partially recovered schizophrenic adults as well as a subset of foster children at risk for schizophrenia. Experiment 2 delimited the source of the information-processing impairment in schizophrenic children by ruling out a number of possible causes of impairment and suggesting that schizophrenic children use the same information-acquisition strategies as MA-matched children but less efficiently. Experiment 3 revealed that, consistent with the previous research, the schizophrenic children were comparable with the MA-matched controls on a full-report span-of-apprehension task that placed heavy demands on iconic and short-term memory. Both the schizophrenic and MA-matched normals performed significantly better than the younger normal children. Taken collectively, the results of the three experiments suggest that all groups of children engaged in a serial information-processing strategy while performing on the partial-report version of the span-of-apprehension task. The differential impairment of the schizophrenic children on the partial-report versions but not the full-report version of the span-of-apprehension task seems to reflect inefficiencies in controlled attentional processes that normally develop during middle childhood.     

一种基于本体的语义信息集成方法

针对信息集成中的语义异构问题,提出了一个基于本体的语义信息集成模型OSII,并给出了逻辑框架.OSII采用混和本体方式建模,以OWL描述本体,通过局部本体与全局本体之间的映射获得多源统一视图.提出了一种基于树结构的多策略本体映射算法,该算法包含4个步骤,即预处理,名称映射,子树映射和映射矫正.其特点在于:按照数据类型分类进行映射,并采用启发式规则,提高映射效率;同时考虑概念的语言相似性和结构相似性,提高相似度计算的准确性;采用迭代矫正,最终得到正确而完整的映射对.通过一个挑战性的实例说明了算法的有效性.OSII能很好地解决信息集成中的语义异构难点,实现多信息源之间的互操作.     

Detectability and choice during visual search: joint effects of sequential priming and discriminability

Pigeons searched for symbolic targets among heterogeneous distractor items displayed on a video monitor. Phase 1 varied target identity and overall display size, thus establishing differential discriminabilities of three target symbols. Phase 2 varied the relative probability of these targets within sessions. The findings showed that reaction time was lower not only when targets were more discriminable, but also when they were relatively frequent; these effects did not depend on the discriminability of the less frequent targets. Phase 3 was similar in design but provided occasional choice trials on which two targets appeared. The birds were more likely to respond to the more frequent target on such trials only if it was also the most discriminable. The data are not consistent with certain predictions from Guilford and Dawkins’ (1987) reinterpretation of effects attributed to search images. The data indicate that detection and choice are modified jointly by priming-induced expectancies and stimulus-driven perceptual processes.     

基于多模态信息融合的数字图书馆信息集成服务研究

随着网络技术的飞速发展,本文将多模态信息融合技术融入到数字图书馆信息集成服务中,并提出了一种全新的数字图书馆信息集成服务模式。     

Effective integration of information and communications technology in teacher education

Abstract

Effective delivery of the new information technology (IT) curriculum for student teachers in the United Kingdom, which started in September 1998, is an important challenge for initial teacher training institutions. This article identifies three main obstacles that may limit its successful implementation – student access to computers, the communications and information technology (ICT) policy adopted by initial teacher training providers and the lack of encouragement for students to use ICT on teaching practice. The work is based on a survey carried out in 1997 of lecturers and students in three teacher training institutions in Northern Ireland. The findings have led to the proposal of basic guidelines to contribute towards the development and implementation of an effective ICT policy in initial teacher training institutions.     

图书馆网络信息资源整合实施策略研究

加强网络信息资源的整合,是提高网络信息资源利用率、优化网络信息资源的有效途径。本文从网络信息资源的概念以及为什么要整合网络信息资源入手,提出了网络信息资源整合应采取的有效措施。     

词汇重复对篇章外显层信息的整合

词汇重复对外显层信息的整合主要指一些文章以词汇重复作为手段来整合篇章的内容信息,以达到全篇内容的向心性。词汇重复对外显层的整合常常不仅从内容上进行整合,更从形式结构上来整合全篇。本文以俄语篇章为例,分析词汇重复如何对篇章外显层信息实现整合。     

论课程与信息技术整合的教学原则

课程与信息技术的整合要依据一定的教学原则来进行.整合课的教学,应明确提出信息素养的目标,信息技术的应用要以课程和课程改革为本位,以转变学生的学习方式为核心.     

The impact of orthographic connectivity on visual word recognition in Arabic: A cross-sectional study

This study aimed at assessing the effects of letters’ connectivity in Arabic on visual word recognition. For this purpose, reaction times (RTs) and accuracy scores were collected from ninety-third, sixth and ninth grade native Arabic speakers during a lexical decision task, using fully connected (Cw), partially connected (PCw) and nonconnected (NCw) Arabic words and pseudowords. Effects of grade on word recognition (in RTs and accuracy) and word superiority were predicted to occur. Also, in the third grade, recognition of NCw was predicted to be faster and more accurate than recognition of Cw, because in previous studies NCw were assumed to be visually less complex. In sixth and ninth grades, due to the frequent exposure to connected forms, the recognition of Cw was predicted to be as fast as or faster and more accurate than NCw. The findings largely supported the first and the second hypotheses. As for the third graders, a mixed pattern was obtained, suggesting that the participants were probably in a transitional phase. The results from sixth graders clearly showed that NCw yielded the slowest response times and the lowest accuracy scores across connectivity conditions. Finally, for ninth graders, the absence of connectivity effects on the speed of processing was attributed to the use of very frequent and highly automatized words.